Eugenol Polysiloxane-Polycarbonate/Graphene Nanocomposite: Enhanced in Thermostability and Barrier Property.

Xiaoyan Pang,Jianfang Ge,Jianxin Wu,Jie Yan,Zehua Lin,Junwei Fu,Xunjun Chen,Mingde Chen,Yuming Li

doi:10.3390/nano9121747

Xiaoyan Pang, Jianfang Ge + Show 7 more

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https://doi.org/10.3390/nano9121747

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Abstract

Graphene (GR) was used to blend with eugenol polysiloxane-polycarbonate (Si-PC) copolymer to prepare a Si-PC/GR nanocomposite via a solution blending method and the impact of graphene on the properties of Si-PC/GR nanocomposite was investigated. The morphology and structure of the Si-PC/GR nanocomposite were characterized. Combining morphology and property analysis, the result showed that when the graphene dispersed uniformly in the Si-PC matrix, the mechanical properties, thermostability and barrier property of Si-PC/GR nanocomposite were enhanced. Compared with Si-PC copolymer, the pyrolytic temperature of Si-PC/2.5%GR nanocomposite at 5% weight loss was 434.3 °C, which was 20.6 °C higher than Si-PC copolymer; and the oxygen barrier value of Si-PC/1.5%GR nanocomposite decreased to 160.2 cm3/m2 24 h 0.1 MPa, which was 53.2 less than pure Si-PC. The mechanical properties of Si-PC/GR nanocomposite were enhanced with an appropriate additive amount of graphene. The hydrophobicity also had been enhanced at the meantime.

Highlights

IntroductionAs a kind of engineering thermoplastic, aromatic polycarbonate (PC) possesses excellent properties
As a kind of engineering thermoplastic, aromatic polycarbonate (PC) possesses excellent properties.It is used in glass, machine parts and plane cabin covers [1,2]
Eugenol is a common bio-phenol in the chemical synthesis, and eugenol polysiloxane was used in the polymer modification for its chemical reactivity, antibacterial property and benzene ring which could improve the rigidity of polymer [7,8,9,10,11]

Summary

Introduction

As a kind of engineering thermoplastic, aromatic polycarbonate (PC) possesses excellent properties. It is used in glass, machine parts and plane cabin covers [1,2]. PC, with a high melt viscosity, is hard to machine and the product is likely to stress crack, which limits its further application, so modifications of PC have attracted many researchers [3]. Eugenol pysiloxane-polycarbonate (Si-PC) copolymer was synthesized via copolymerization between eugenol polysiloxane and PC monomer, and thusm reduced the melt viscosity, improved the toughness and improved the thermal properties of PC [12,13]

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